Could there be a difference of mission which influences the benefits or drawbacks of night sights?
Example- when I had my close call self defense case, the target was clear and it was dusk- plenty of light to see both the sights, and ID the guy with his right hand in his hoodie pocket as being bad news. Given how civil self defense , usually , legally requires acting AFTER a criminals already initiated hostilities, picking out who to shoot wouldn't be as much of a challenge as a LEO or military member responding to a dynamic situation already happening.
Ergo, in civil defense the bad guy usually IDs himself by nature of their attack. In Public Service you're coming into a situation unaware initially of the players, which makes ID more critical.